Autel AUTOLINK AL529 Manual page 45

run and performed their self-diagnostic testing is in the allowed limit.
MIL is off).There are no stored and pending DTCs. The vehicle is ready
for an Emissions Test, and there is a good possibility that it can be
certified.
 YELLOW LED – with MIL off, there may be three possible conditions to
cause the yellow LED to light.
 If a "Stored" Diagnostic Trouble Code is causing the Yellow LED to
light, it is still possible that the vehicle will be allowed to be tested
for emissions and certified.
 If a "Pending" Diagnostic Trouble Code is causing the Yellow LED
to light, it is still possible that the vehicle will be allowed to be tested
for emissions and certified.

If the illumination of the Yellow LED is being caused by monitors
that have not completed their diagnostic testing, then the issue of
the vehicle being ready for an Emissions Test depends on the
emissions regulations and laws of your local area.
NOTE
From the code retrieval procedure, determine the status of each Monitor.
Take this information to an emissions professional to determine (based on
your test results) if your vehicle is ready for an Emissions Test.
 RED LED – indicates there is a problem with one or more of the
vehicle's system. A vehicle displaying a red LED is definitely not ready
for an Emissions Test. The red LED is also an indication that there are
DTCs present. The MIL lamp on the vehicle's instrument panel will light
steady. The problem that is causing the red LED to light must be
repaired before an Emissions Test can be performed. It is also
suggested that the vehicle be inspected/repaired before driving the
vehicle further.
If the RED LED was obtained, there is a definite problem present in the
system(s). In these cases, you have the following options:

Repair the vehicle yourself. If you are going to perform the repairs
yourself, proceed by reading the vehicle service manual and
following all its procedures and recommendations.

Take the vehicle to a professional to have it serviced. The
problem(s) causing the red LED to light must be repaired before
the vehicle is ready for an Emissions Test.
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